Ten years registration of assisted reproductive technology in BelgiumSince 1989, the data concerning medically assisted procreation (MAP) have been registered through the BELRAP association (Belgian Register for Assisted Procreation) in Belgium. In 1999, the national College of Physicians in Reproductive Medicine has been installed and has been given the mission to carry out the quality controls and the registration of MAP activities in our country. In 2001, a new system of registration of all treatment cycles was initiated, the basic structure of the corresponding data base having undergone a series of changes along the years.Although the number of MAP trials considerably increased in our country, mainly due to the introduction of new techniques such as intracytoplasmic injection of sperm (ICSI), the success rate per trial remained almost unchanged, stabilizing around 18,8% of ongoing pregnancies per initiated cycle.The main modification, which occurred during the analyzed period, has been the reduction of the number of embryos transferred at each trial, being first reduced from 3 to 2 to evolve more recently towards the replacement of only one embryo per trial. Multiple pregnancies are indeed the chief complication of MAP and in order to avoid it Belgian centers have been among the first to reduce drastically the number of transferred embryos.In 2003, legal rules were enacted, fixing the number of replacable embryos in accordance to the patient’s age and to the rank of trial, while also solving the problem of the long-awaited reimbursement of MAP by our national social security system.